81 Nobel laureates endorse Biden

• The endorsees include winners of the Nobel Prizes in chemistry, medicine and physics.
• The endorsement was organized by Rep Bill Foster (D-Ill.), the only physicist in Congress.

What they're saying: "At no time in our nation's history has there been a greater need for our leaders to appreciate the value of science in formulating public policy," their open letter reads.

• "During his long record of public service, Joe Biden has consistently demonstrated his willingness to listen to experts, his understanding of the value of international collaboration in research and his respect for the contribution that immigrants make to the intellectual life of our country."